fisher



LB. FISHER. -GOVRNOR FOR INTERNAL comsusnou mamas.

APPLICATION FILED JUNE 16. 1931 6.

1,304,672, Patented May 27, 1919.

3 SHEETS-SHEET I.

J. B; FISHER.

GOVERNOR FOR INTERNAL comsusnow ENGINES.

APPLICATION FILED JUNE 16, 1916.

Patented May 27, 1919.

3 SHEETSSHEET 2.

m =3MQ J. B. FiSHER.

GOVERNOR FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JUNE 16. ms.

Patented May 27, 1919.

a SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

JAMES B. FISHER, OF WAUKESHA, WISCONSIN, ASSIGNOR T0 WAUKESHA MOTOR OOIPANY, OF 'WAUKESHA, WISCONSIN, A-CORPORATION OF WISCONSIN.

GOVIlRNOB FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented May 2'7, 1919.

Application filed June 16, 1916. Serial No. 103,926.

To all whom it may concern:

Be it known that I, JAMES B. F snnn, a citizen of the United States, residing at Waukesha, in the county of Waukesha and State of Wisconsin, have invented a certain new, and useful Improvement in Governors for Internal-Combustion Engines, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to governors for internal combustion engines and its ob ect is to provide improved means for automatically controlling the supply of combustible mixture passing from the carbureter to the engine cylinders, according to the englne s eed.

It is the object of my invention to provide mechanism which shall be simple and inexpensive, easily assembled, and effective and reliable in operation.

Accordingly, I provide a member which is rotated at a speed proportional to the engine speed, this member being provided with a p urality of pockets arranged n regular position and having their axes lying in radial planes and extending obliquely relative to the axis u on which the member rotates.

In each 0 these sockets a governor ball is loosely disposed and centrifugal force moves'these balls outwardly and also forwardly to produce a proportional thrust which may be transmitted to the valve controlling the supply of combustible mixture.

In the accompanying drawings- Figure l is a side elevational view of an internal combustion engine having my governing mechanism applied thereto;

Fig. 2 is a sectional view of the governing mechanism itself drawn on a larger scale;

Fig. 3 is an end view of the governing mechanism, the cover plate being removed to reveal the interior construction;

Fig. 4 is a sectional view taken on the plane of the line 4-4 of Fig. 2 and looking in the direction indicated by the arrows;

Fig. 5 is a sectional view taken on the plane of the line 5-5 of Fig. 2 and looking in the direction indicated by the arrows;

Fig. 6 is a sectional view taken on the plane of the line 66 of Fig. 2 and looking in (ithe direction indicated by the arrows; an

Fig. 7 is an end view of the rotatable member which will be referred to.

Referring first to Fig. 1, it will be seen that the engine, as a whole, is illustrated at 8, the cylinder portion being at the top and the crankcase portion being at the bottom. The combustible mixture intake is illustrated at 9 and it will be understood that a carbureter of any adaptable construction is to be applied thereto, the carbureter itself usually embodying a manually controlled throttle valve. The casing 10 and the tube 11 supplement the general engine casing in inclosing the governing mechanism which I shall now describe.

Referring now to Fig. 2, it will be seen that I provide a stub shaft 12 in a suitable housing 13, the rotatable governor member 14 being mounted upon the stub shaft 12 with a suitable bushing 15 intervening, a wearing plate 16 being disposed between the member 14 and the housing 13. Mounted to rotate with the rotatable governing member 14 is a pinion 17 which meshes with a gear 18, shown in Fig. 3, mounted on the engine shaft (not shown). The casing is so formed as to provide an oil pocket 13' adjacent to the housing 13, this oil pocket being supplied, in operation, by oil thrown up from the crank chamber from which the governor casing 19 is a simple extension. By means of a passageway 20, shown in Fig. 6, the oil pocket 13' is connected with a groove 21 in the stub shaft 12 which, in turn, connects with a longitudinal oil groove 22 leading to the bushing 13 for proper lubrication between the relatively movable parts.

The member 14 as will be seen from Fig.

7, is of circular formation and is provided with four pockets 23-23 of cylindrical formation and regularly arranged, the axes of these pockets lying in radial planes in which the axis of the rotatable member 14 also lies, the axes of these pockets being positioned at an angle of 45 to the axis of the member 14, as shown.

Centrally secured in the member 14 and extending forwardly therefrom is a pin 24 upon which a collar 25 is mounted for longitudinal movement. In each of the pockets 23 a governor ball 26 is disposed, these balls, as shown, being confined in the pockets by the collar 25. Mounted upon the collar 25 is a Wearing ring 27 and a ball bearing carrying ring 28, retaining a plurality of ball bearings 2929, is disposed between the wearing ring 27 and an opposing wearing ring 30, mounted in a cup member 31 which, in turn, is pivoted at 32, to a lever 33.

The lever 33 is mounted upon a shaft 34 extending from side wall to side wall of the supplementary casing 10 and the upper arm of this lever is provided with an adjustable contact screw 35 for a purpose to be pointed out presently. The upper arm of the lever 33 is provided with a cup 36 in which a stool member 37 is mounted upon a finger 38. A helical spring 39 is disposed between the stool member 37 and an opposing stool member 40 which is mounted upon a finger 41 of an adjusting screw 42 threading in an extension 43 from the supplementary casing 10 and held in any adjustable'position by means of a lock nut 44. Access to the parts just described, within the supplementary casing 10, may be had by the removal of the cover plate 45 which is normally held in place by means of screws 46-46.

As shown in Figs. 2, 4 and 5, a rotary valve 47 is mounted in the inlet 9. So far as the features of my invention are concerned, any type of valve may be here employed, so'long as it is adaptable for the purpose, the rotary type of valve being shown merely as an example. Let it be understood that movement of the valve in the direction of the arrow X (Fig. 2) tends to open the valve while movement in the direction of the arrow Y tends to close it. The valve carries a lug 48 with which a push rod 49 is adapted to engage. This push rod is mounted at one end in a bearing 50 in the supplementary casing 10 and at the other end in a bearing 51 in the casing which forms the inlet, as illustrated. A collar 52 on the push rod 49 determines the limit of movement of the push rod toward the left (Fig. 2). The rod 49 is divided at 53 and joined at this division by means of a spring member 54 having its ends secured to the two portions of the rod respectively and tending to hold them together, this construction being employed so that absolutely perfect alinement of the bearing 50 and bearing 51 is not imperative. The push rod arrangement is protected by the tubular housing 55 extendin from the casing 10 to the inlet casing 9. apposite the right hand end of the push rod (Fig. 2), on the other side of the lug or projection 48, a plunger 56 is mounted in a socket 57 in a plug screw 58, a spring 59 being disposed behind the plunger to tend to force it outwardly against the projection or lug 48. It will thus be seen that the spring 59 tends to open the valve 47. The hearing 50 for the push rod 49 may be oiled from a suitable oil cup 60, if desired.

It will now be seen that the left hand end of the push rod 49 (Fig. 2) is in line with the end of the contact screw 35. Let it also be kept in mind that the spring 59 tends to open the valve 47. It will now be seen that as the governing member 14 turns at a rate of speed proportional to the speed of the engine shaft, the governor balls 26 26 will be thrown outwardly and in doing so will engage the collar 25 to thrust it outwardly. This outward thrust of the collar 25 is transmitted to the lever 33 which swings about its pivot 34 until the contact screw 35, which has been adjusted in an elected position, engages the push rod 49. Until this engagement takes place, there is no change in the size of the inlet 9 and it may be assumed that the desired limit of engine speed has not been reached. However, if the speed at which contact between the screw 35 and the push rod 49 begins is exceeded, the result will be a movement of the push rod to the right (Fig. 2) to close the valve 47 slightly. This will bring down the speed and the tendency will be for the balls 26--26 to recede and for the contact screw to leave the push rod 49.

It will be seen that I thus provide a maximum and constant speed governor. Unless the speed is being influenced by manual control at the carburetor the tendency of the governor is to keep the engine up to a certain speed, when the motor is running at this speed under load, the application of a greater load results in a slight slowing up of the motor and a movement of the governing valve, tending to admit more gas andbring the motor up to the desired speed. The maximum position of the valve 47 may be determined by properly setting the bushing 51 which, it will be noted, is threaded in place so that adjustment may be had, it being seen that the collar 52 engages the end of the member 51 to determine the maximum open position of the valve. If the load is removed, the motor will of course tend to speed up, but the governing action which has been described, will cause the clos ng movement of the valve 47, thus partially shutting off the gas mixture and slowing up the motor. When the engine speed is reduced again, the action of the governor will be reversed, the spring 59 acting to move the valve again to full open position.

It is of particular importance that the force exerted by the balls 26-26 as they travel on the line of 45 with the center line of the governor, tends constantly to increase so that with the increased compression of the spring 39, against which the governor acts, there is a correspondingly greater force acting on the spring.

, englne, a governor member rotatable at a rate of speed proportional to the engine speed, said governor having a plurality of obliquely outwardly extending pockets therein, governor balls in said pockets, a collar extendingover said pockets, said collar having longitudinal movement on the axis, upon which said member rotates and arranged to be moved longitudinally by said balls when said balls'move outwardly by centrifugal force, a lever having one arm thereof arranged forengagement b said collar, and a push rod'for transmitting the movement of the other arm of said lever to said valve, said push 7 rod and said lever being out of engagementat' the lower engine speeds, said collar rotating with said governor member and ball bearings being interposed between said collar and said lever. A

2, In a governor for internal combustion engines, a valve controlling the intake to the engine, a governor member rotatable at a rate of speed proportional to the engine speed, said governor member having a plurality of obliquely extending pockets therein, governor balls in said pockets, a pin on said governor member, a collar longitudinally movable on said pin, said collar having a flat face overlying said pocket openings, a lever havin a thrust plate pivoted thereto, a thrust bal bearing interposed between said collar and said thrust plate to permit rotation of said collar, an adjustable spring acting on said lever, and a rod'for transmitting the movement of said lever to said valve.

3. In a governor for internal combustion engines, a valve controlling the intake to the engine, a push rod operatively connected to said valve, a governor device rotatable at a rate of speed proportional to engine speed, a lever having one arm acted upon by said governor device, the other arm of said lever engaging the end of said push rod when a predetermined engine 1 speed is exceeded, and an adjusting screw threading through the end of said lever and adapted to engage said push rod for varying the in stant of engagement between said lever and said push rod correspondingto-difl'erent engine speeds. w r

4:. Ina governor for internal combustion engines, a valve controlling the intake of the engine, a governor device rotatable at a rate of speed proportional to engine speed, a rod extending between said governor and said valve for transmitting governing movement to said valve, said rod comprising a plurality of coextensive sections, and spring means joining adjacent sections.

In witness whereof, I hereunto subscribe my name this 12 day of June, A. D. 1916.

JAMES B. FISHER. 

